| ??? 09/01/07 13:44 Modified: 09/01/07 13:50 Read: times |
#143844 - Is it so Responding to: ???'s previous message |
Datasheet reveals that
"In normal operation ALE is emitted at a constant rate of 1/6 the oscillator frequency,and may be used for external timming or clocking purposes. If desired ,ALE operation can be disabled by setting bit 0 of SFR location 8EH.With the bit set,ALE is active only during a MOVX or MOVC instruction.Otherwise ,the pin is weakly pulled high.Setting the ALE-disable bit has no effect if the microcontroller is in external execution mode." How can I use ALE pin as timming or clocking.I cannot find any instruction for that purpose. |
| Topic | Author | Date |
| ALE pin control | 01/01/70 00:00 | |
| No. | 01/01/70 00:00 | |
| More information needed | 01/01/70 00:00 | |
| Nothing | 01/01/70 00:00 | |
| Smart MCU | 01/01/70 00:00 | |
| it does not care | 01/01/70 00:00 | |
| Is it so | 01/01/70 00:00 | |
| there is none | 01/01/70 00:00 | |
| Like it says | 01/01/70 00:00 | |
| Dumb MCU! | 01/01/70 00:00 | |
| I don't understand | 01/01/70 00:00 | |
| Neither do I! | 01/01/70 00:00 | |
| Is that like | 01/01/70 00:00 | |
| Not allways... | 01/01/70 00:00 | |
| I hate to give ATMEL credit, ... but ... | 01/01/70 00:00 | |
| not with MOVX... | 01/01/70 00:00 | |
| Being more clear | 01/01/70 00:00 | |
| it seems perfectly reasonable to me ... | 01/01/70 00:00 | |
| Yes, some of them... | 01/01/70 00:00 | |
With ATMEL, nothing surprises me ... | 01/01/70 00:00 |